TEA1721DT/N1 is being used to convert 230Vac to 14Vdc
It happened many times that D1 diode burns then L4 and finally F1.
TEA1721 itself was never damaged. We notice that C4 capacitor was inflated.
Is the CLC filter dimesoned properly?
It is becouse rectifier diode application. Try to use integrated circuit ic.
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